Clark County Climate
Clark County, Idaho
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.3°F
Annual Precip
12.2"
Annual Snowfall
47.3"
Extreme Heat Days
20
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
2,158
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Clark County
Climate Verdict
Clark County has a cool, averaging 45.3°F annually, arid conditions receiving just 12.2 inches of precipitation annually, occasional hot days — 20.3 per year above 90°F, moderate snowfall of 47.3 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 22.2°F. summers are warm — July averages 70.7°F. The 49°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Clark County closely matches the Idaho statewide average temperature of 46.5°F, it is somewhat drier than average for Idaho.
Climate Profile
About Clark County Weather
A High-Altitude Cool Spot in the West
Clark County maintains a crisp annual average temperature of 45.3°F, notably cooler than the national median. This high-plateau climate sits in stark contrast to warmer southern regions of the country.
Cooler Than the Average Idaho County
With its 45.3°F average, Clark County runs roughly 1.2 degrees colder than the Idaho state average of 46.5°F. This makes it one of the more temperate but cooler jurisdictions in the Gem State.
Dry Skies Compared to Mountain Neighbors
The county receives just 12.2 inches of annual precipitation, which is significantly drier than the state average of 17.0 inches. While nearby Fremont County sees over 21 inches of moisture, Clark remains a semi-arid landscape.
Deep Freezes and Pleasant Summer Afternoons
Winters are biting with a January average of 22.2°F and 47.3 inches of annual snowfall. Summers stay mild with a July average of 70.7°F, though residents still face 20 days of heat over 90°F.
Prepare for Snow and Arid Air
Homeowners should prioritize high-quality insulation to handle the 23.4°F average winter temperatures. Because of the low 12.2-inch precipitation rate, drought-resistant landscaping is essential for local yards.
Frequently Asked Questions
What is the average temperature in Clark County?
How much rain does Clark County get?
Does it snow in Clark County?
How hot does Clark County get in summer?
How cold are winters in Clark County?
Track your own weather in Clark County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.